错畸形患者牙颌对称性的CBCT研究  

An evaluation of jaw bone and dental symmetries in malocclusion deformity patients using cone-beam computed tomography

作　　者：史建陆[1] 陈晓迪[2] 魏婷婷[2] 林奕真[1] 王智军[1] 

机构地区：[1]福建医科大学教学医院.厦门市口腔医院,福建厦门361003 [2]福建医科大学口腔医学院,福建福州350004

出　　处：《临床口腔医学杂志》2013年第5期288-290,共3页Journal of Clinical Stomatology

摘　　要：目的:应用锥形束CT(CBCT)观察错畸形对牙、颌骨形态对称性的影响。方法:选择安氏Ⅰ类、Ⅱ类、Ⅲ类患者各15名拍摄CBCT影像。利用Dolphin软件进行重建并运用Katsumata的不对称系数公式对颅面部骨骼、牙齿的参数进行评估。由研究者对所有研究对象进行三次测量,取平均值,进行统计分析。结果:安氏Ⅰ类、Ⅱ类和Ⅲ类错牙合患者骨骼、牙齿的不对称系数均显示出从上到下逐渐增大的趋势。下颌角点的不对称系数在安氏Ⅲ类和安氏Ⅰ类错之间存在显著性差异(P<0.05),安氏Ⅲ类患者大于安氏Ⅰ类和Ⅱ类患者。结论:CBCT可以更精确地发现临床上无明显不对称但实际存在不对称的颅面部结构。The aim of this study was to study malocclusion＇s effect on skeletal, alveolar, dental asymme- tries by cone-beam computed tomography. Method： Fifteen patients selected respectively for various malocclusions were scanned by CBCT, the images were reconstructed with DOLPHIN software, evaluating skeletal, alveolar, dental asymmetries with the asymmetry indices （AI） developed by Katsumata. All data was analyzed by SPSS 17.0. Result： 1.The AIs of Class I, Class II and Class III were increased upper to lower gradually, and the AI of ramus area was the largest. 2. The AI was sig- nificantly different in gonion between Class III and Class I （P〈0.05） and the AI of Class III was bigger than that of Class I and Class II. Conclusion： The subtle skeletal, alveolar, dental asymmetries can be found by CBCT, although there may be no evident clinical symptoms.

关 键 词：锥形束CT 不对称性 错[牙合]畸形 3D重建 

分 类 号：R783.5[医药卫生—口腔医学]